Diameter: This is a 31

Base mount analog

Bearings are factory filled with Phil wood grease

Sporting a slightly narrower rim width than its front brethren

our proprietary Midstroke Support Valve technology boosts the midstroke spring rate to maintain linearity

Crank Brothers Mallet Trail BOA Clip-In Shoes - US 10 - Black - Gold Gift Card Diameter: This is a 31Some things just work better together. Like an optimized shoe pedal combination. Crankbrothers Mallet clip in plays nice on the race track and at the bike park. It has a ramped Match cleat box for easy front and rear pedal entry and for mud shedding. A Race Zone setback on the cleat track allows the cleat to be positioned further toward the heel for added stability when descending. OUTSOLE: Match Box optimized for any MTB pedals Race Zone for control